This does not mean investing in companies who have no other business besides investing in Bitcoin. Given what is currently public knowledge, quantum computers are still far away; the most powerful quantum computer to date managed to use Shor's algorithm to factor simply click the next document number 21. However, sudden advances are always possible, and we always need to have a plan of what we can do if Edward Snowden decides to leak out that the NSA has fully functional quantum computers hiding in a secret data center. Maybe we can layer them like a sandwich? Platforms like Bitcoin and Ethereum are known as ‘Proof of Work’ blockchains, where the ‘work’ required to add that transaction to the blockchain uses a large amount of computing time and energy. The time in between blocks is not what determines throughput in crypto networks.